I do dislike individual language package managers and ecosystems for this reason, but I think it's gotta be accepted at this point. Practically every language has their own package repo and versioning apparatus now. Ruby has RVM, Node.js has NVM, Python has PyPi/venv, etc. Most projects expect their users to deploy with these and include things like Gemfiles to define dependencies. That usually means if you insist on using the upstream packages provided by the distribution, you're going to have to install them manually and have a bunch of extra headaches to worry about anyway (to be honest, most custom applications are really difficult to get running using only distro-packaged Ruby or Python libs).